Either way should work...
Cheers,
--Michael
On 13-06-03 11:18 AM, Martin wrote:
>
> Michael,
>
> Do you recommend I do a mixdown before transcoding within Avid or do a
> conventional sequence transcode which would give me all the sequence's
> clips transcoded separately? Or is there some way I've never spotted
> of transcoding a sequence into a single clip in one step?
>
> Martin
>
> --- In Avid-L2@yahoogroups.com <mailto:Avid-L2%40yahoogroups.com>,
> Michael Brockington <brocking@...> wrote:
> >
> > Hi Martin:
> >
> > My impression is that Compressor does not properly handle DNxHD
> > codecs (deliberate indifference, perhaps?)
> >
> > I find the following gives pretty decent results:
> > - transcode to ProRes inside Avid - will look identical
> > - export ProRes quicktime as RGB Same-as-source - will look more
> > 'spread'
> > - run ProRes export through compressor to generate H.264
> >
> > It won't be a perfect match to what you started with, but will look
> > a lot better than the washed out stuff you're seeing now.
> >
> > Cheers,
> > --Michael
> >
> > On 13-06-03 10:31 AM, Martin wrote:
> > >
> > > Thanks Steve. I got a little lost in your last paragraph.
> > >
> > > --- In Avid-L2@yahoogroups.com <mailto:Avid-L2%40yahoogroups.com>
> <mailto:Avid-L2%40yahoogroups.com>,
> > > Steve Hullfish <steve4lists@> wrote:
> > >
> > > > The problem is in your compression settings. Look for some filters
> > > or input settings that could be affecting the export.
> > >
> > > For the sake of this conversation I'm using Compressor. There are no
> > > filters set.
> > >
> > > >Are you exporting as RGB instead of 709?
> > >
> > > I"ve been exporting 709. The project was 709, roundtripped to
> DaVinci.
> > > (Footage was shot 601 on Canon 5D & 7D, brought in AMA and then
> > > transcoded to DNxHD 175 709) A Same-as-Source 709 export yields a QT
> > > that matches what I see in Avid (and matches upon AMA reimport). An
> > > RGB Same as Source export gives me something darker, brighter and
> more
> > > saturated (but, oddly, still matches upon AMA reimport).
> > >
> > > >If you're going to a computer delivery (internet) then 709 isn't the
> > > best choice. If you went RGB, you'd end up with a more "spread"
> export
> > > and that export may not wash out when going through compressor.
> > >
> > > OK, this is where you lost me. Are you saying I should export RGB
> > > (even though the project is 709) so the 'more "spread"' QT will
> > > compress in H.264 to something close to the original? I just ran a
> > > test. I exported :02 from Media Composer, same as source, but with
> RGB
> > > selected. The QT does look darker, brighter and more saturated
> ---what
> > > I'm guessing you mean by more spread. But if I then send it to
> > > Compressor and compress to H.264 I get something exactly the same
> > > (washed out) as if I had exported 709.
> > >
> > > >Is Compressor expecting an RGB file? Maybe. And if you're feeding it
> > > 709, that would wash it out You have to make sure that the export
> > > settings of the Avid (as far as color space) are the same as the
> > > import settings of the compression program.
> > >
> > > I don't know if Apple Compressor or QTPro or MPEG Streamclip have a
> > > setting to switch between 709 and RGB. I can't find them.
> > >
> > > My brain hurts,
> > >
> > > Martin
> > >
> > > >
> > > > Steve
> > > >
> > > > On Jun 3, 2013, at 10:13 AM, Martin <martin@> wrote:
> > > >
> > > > > I appreciate I am likely beating a dead horse here, but I'm hoping
> > > > > someone can't point me to a definitive link to my issue. I have
> > > searched
> > > > > long and hard and all roads lead me to, well, other roads.
> > > > > I am trying to compress a copy of my show for Vimeo. Vimeo
> > > requires the
> > > > > H.264 codec. I export a copy of my show from MC 5.5.3 Same as
> > > Source. At
> > > > > this stage I get, as you would expect, a QT that perfectly
> matches my
> > > > > Avid cut for luma and chroma. I then have a choice on my system of
> > > > > Compressor, MPEG Streamclip or QuickTime Pro to compress to
> H.264. All
> > > > > three of these tools give me a sequence that is washed out:
> blacks,
> > > > > whites and colors are all dull.
> > > > > I've found and installed the X264 codec and tried it and I get
> a QT to
> > > > > the other extreme: blacks crushed, whites blown out and colors
> > > > > exaggerated.
> > > > > Am I having this problem because none of these compressors are
> good
> > > > > enough? Is there a successful workaround? As inelegant as it
> is, I
> > > would
> > > > > be prepared to adjust the levels on my show before export, but
> how
> > > much?
> > > > > Honestly, I'm not trying to get folks to repeat a conversation
> that's
> > > > > been talked to death, but X264 was my last lead.
> > > > > (Due diligence forced me to do one more search before hitting
> Send
> > > and I
> > > > > came up with this
> > > > >
> > >
> <http://byteful.com/blog/2010/07/how-to-fix-the-h264-gamma-brightness-bu\
> <http://byteful.com/blog/2010/07/how-to-fix-the-h264-gamma-brightness-bu>>
> >
> <http://byteful.com/blog/2010/07/how-to-fix-the-h264-gamma-brightness-bu>>
>
> > > > g-in-quicktime/> from July of 2010 regarding a Japanese version of
> > > > > X264. Has anyone tried this? I will be.)
> > > > > Any direction would be hugely appreciated,
> > > > > Martin
> > > > >
> > > > > [Non-text portions of this message have been removed]
> > > > >
> > > > >
> > > >
> > > >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > >
> > >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
[Non-text portions of this message have been removed]
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